Energy Audit and Management in Shipping: A Case Study Onboard Ship

Abstract

The sectoral priorities of maritime transportation are expected to focus on reducing fossil fuel-based environmental pollution and shaping sustainable energy management. Despite the International Maritime Organization's (IMO) regulations in this context, the prioritization of energy efficiency and the improvement of its manageability in ships are still anticipated. This study thoroughly examines the energy efficiency and management of a reference chemical tanker, with a particular emphasis on performance and environmental efficiency. The analysis indicates that there is a need for defining energy efficiency targets and improving the optimization process. Based on the ship's load rate and energy consumption behaviors, parameters for energy efficiency rates have been developed, and the environmental impact of the ship can be evaluated using an entropy-based approach. According to histogram analyses, the first energy efficiency target is set at 8.80%, and the second target at 32.58%. Energy efficiency analyses indicate that environmental pollution is approximately 57%, while the entropy approach calculates the energy efficiency rate of the ship at 17.96%. This study should be evaluated as an example of energy audit assessment and exergy analysis for environmental impact assessment to gain energy management behaviour for ships. It provides a contribution to the energy management structure of ships. This study provides an approach for the holistic assessment framework of energy efficiency on ships. It reveals the environmental impact potential for the entropy-based consumption potential of energy consumption. It provides a framework for decision processes.